Equalizing oil-burner.



W. MELAS.

EQUALIZING OIL BURNER.

APPLICATION FILED JUNE 26. I914.

1,1 @,%9. Patented Nov; 16,1915

Imam/W arren s rains mm carton.

WILLIAM MELAS, OF RIDLEY PARK, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF '10DAVID TOWNSEND, 0F PHILADELPHIA, PENNSYLVANIA.

. nermmzme err-B RNER To all whom it may concern Be it known thatI,.WILLIAM MELAS, a citizen of the United States, residing at RidleyPark, in' the county of Delaware and State" of Pennsylvania, haveinvented certain new and useful Improvements in EqualizingOil-Burners,of which the fol burners has not a steady pressure, but one which variesbetween a certain maximum and minimum ,which variations are constantlyre-occurring inacertain time-interval; moreover, the magnitude of saidpulsations, or the difference between maximum and minimum pressure isnot constant, but varies in the measure as 'the compressor is taxed.This unsteadiness of pressure causes an unsteady working of the burnerssupplied with air which is mostundesirable and isin many casesdeleterious. This unste'adiness is especially marked in installations ofa temporary -nature, where it is impracticable to install largeequalizing tanks, as is for instance the case in erection work forbuildings, bridges or field repair work, etc. Work of this character isinvariably done with small portable furnaces and these furnacesa-reusually handled by men who are not skilled firemen. It is, therefore,desirable to have a burner construction which is especially adapted forsuch work andhandling and in order to meet the furnace conditions it isthe object of my invention to provide a burner of small and" compactconstruction. Furthermore, in order to meetthe air supply conditions, toprovide a burner which produces a steady spray when supplied with apulsatmg air current. Furthermore, in order to. meet the conditions ofhandling, to pro vide a burner which is simple in construction, whichcan be easily cleaned if necessary and which does not need anyre-adjustment when re-assembled after cleaning.

The F igures I, II and III of the accompanying rawing illustrate myinvention;

Specification of Letters Patent. I

Fig. II and viewed as indicated'by the ar- Patented Nov. is, was.

Application filed June 26, 1914. Seria1No.847,454. 1

rows. Fig. II is a top view of the burner body; thenozzles'beingremoved. Fig. III is a top view of the oil nozzle.

In the drawing 1 is the-- burner body, having an oil inlet 2, tapped asindicated by 3 to receive an oil supply pipe (not shown). The bore 4communicates with-the tapped bore 3 and with the axial bore 5 which,ends at the upper face of the cylindrical bodyextension 6-. The burner.body 1 has also an air inlet 7 tapped asindicated by 8 to receive'an'air supply pi e (not shown) The bore 9 communicates with the tappedbore 8 and with the bore 10 which terminates in a circular groove 11,cut in the upper face of 6. The portion between bore 5 and the innerface'of groove 11 is srmewhat raised above the upper face of thebody-extension and. forms an annular seat 12, whichis faced offaccurately and at right angles to the axis of 6.

The body-extension .6 is provided with an external thread 13 which isengaged by an internal thread 14, cut in the lower part ofthe air n0zzle15. .The part of theair nozzle above the thread is recessed. The recesshas a cylindrical face 16 concentric with the threaded bore and an upperface l7 at right angles thereto and to the axis of thread. Above therecess face 17 is a chambered portion 18, which has an axial, inwardlyflaring bore 19, which bore is joined by an outwardly flaring bore 20.

21 represents an oil nozzle, having a conical portion 22, at the base ofwhich extends the circular flange 23 fitting the recess in air nozzle.Flange23 has a number of openings 24. The central portion of-nozzle 21is extended somewhat below the lower face of flange 23, which extensionis faced accurately and at right angles to the nozzle axis and forms thenozzle seat 25 against seat 12 on the upper face of body extension. The

center portion ofoil nozzle 21 is provided by a conical bore 27.

The burner in Fig. I is shown'with the 1 parts assembled and in workingposition.

twill be seen that a lower air chamber 29 is formed between upper faceof body-extension 6 and lower face of flange 23, which is incommunication through holes 24 with an i pp air chamber 30; the latterbeing formed by the upper face of flange 23 and the chambered portion 18in air nozzle. The

of these chambers insures a steady presence working of the burner with apulsating current of air. The air, passing through bore 10 into thecomparatively largechamber 29, expands, thereby decreasing the magnitudeof the pulsations.

i made to occur one half of a period later than those in, the lowerchamber so that a maximum in the lower chamber would correspond with aminimum in the upper chamber and. vice versa. This has the effect ofcomplete pressure equalization in the upper.

chamber, and thus a steady, non-pulsating current of air will emit fromthe annular I 25 opening bet'ween bore 19 and nozzle 22. This again willproduce a,

steady current of air, steady, non-fluctuating spray by the mechanicalaction on the oil stream emitting from bore 28.

The cleaning of the nozzles in case of carbonization, or stoppage causedby impurities carried with the air or oil, can easwhich action detachesboth the air and oil nozzle, simultaneously from the burner body. Theoriginal relative position of the nozzles, governing the efiective airoutlet area, is not changed by re-assembling. the nozzles aftercleaning, and, consequently the burner does not need any re-adjustment.

Having/thus described the purpose,'usefulness and working of myinvention, I desireto secure by Letters Patent:

In an oil .burner the combination of a burner body, having 'a threadedcylindrical body extension; an. annular groove in the upper face; an airinlet and an air outlet in said ,burner body, the ing within the grooveaforementioned; an oil inlet and an oil outlet in said burner body, ter,ofthe upper face, whereby an annular seat is formed; an air nozzlethreaded to engage the threads of the body-extension, having a recessedseat and an outlet; and an oil nozzle having a perforated base flangefitting said'seat in the air nozzle and said annular seat on the bodyextension.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

\ WILLIAM MELAS. Witnesses: l HARRY P. Gnnnvns, O. M. Bogrnm.

air outlet terminate the oil outlet terminating in the cen- 'ily beefiected by unscrewing the air nozzle

